Adjustable door hinge



faz/emr Sept. 16, 1947.`

G. BUSHKO ADJUSTABLE DOOR HINGE i Fiied July zo, 1945 Patented Sept. 16, L1947 OFFICE ADJUSTABLE Doon HINGE George Bushko, Eynon, Pa.

Appueation July zo, 1945, serial No. 606,137

4V Claims.

This invention relates to door hinges, and more particularly to a door hinge structure wherein adjustable holding means for maintaining the door in a desired partly open position is provided. A main object of the invention is to provide a novel and improved adjustable door hinge of simple construction, which may be readily installed and which vis extremely easy to adjust from free hinge movement to locking movement and which permits th'e door to be. forceably moved.

A further object of the invention is to provide an improved hinge structure which embodies locking features and which may be readily adjusted from a free hinge condition to a locking condition by a simple cam-actuated mechanism embodied therein.

Further objects. and advantages of the invention will appear Vfrom the following description and claims, and from the accompanying drawings, wherein:

Figure 1 is a front elevational view, partly in cross-section of an adjustable hinge structure according to this invention.

Figure 2 is a cross-sectional view taken on line 2--2 of Figure 1.

Figure 3 is a detail view of a portion of a hinge structure similar to Figure 1, but illustrating a modification thereof.

Figure 4 is a cross-sectional view taken on line 4-4 of Figure 1.

Figure 5 is a cross-sectional View taken on line 5-5 of Figure 3.

Referring to the drawings, the hinge structure comprises a rst butt member I formed with rolled vertically aligned sleeve elements 2, 3 and 4 and a second butt member 5 formed with vertically aligned sleeve elements 6 and 'I respectively received between the sleeve elements 2 and 3 and between the sleeve elements 3 and 4 of butt member I.

lSleeve element 4 is internally threaded at its upper portion and sleeve element 2 is internally threaded at its lower portion.

The hinge pin structure for the hinge comprises a bottom cylindrical element 8 positioned in sleeve element 2 and secured therein by a boli; 9. The top surface of element 8 is formed with rounded periph'eral teeth I0. Positioned in aligned sleeve elements 4, 1, 3, G and '2 above element 8 is a pin member I I formed at its lower surface with peripheral rounded teeth I2 adapted to slidably interlock with teeth IIJ, and normally biased to an interlocking relation therewith havingfa lower tapered head portion I4 adapted to bear in a conical depression formed in the top of pin member II and urged downwardly by a spring I5 bearing between head portion I4 and a bushing member I6 threadedly received in the upper internally threaded portion of sleeve element 4. Bushing member I5 is formed with a top flange I1. The upper end of abutment member I3 is slotted at I8 and pivotally mounted in the slot is a cam member I9 having an elliptical bearing portion 2U adapted to cooperate with flange II and formed with a lever arm 2I. When .lever arm 2l is rotated counterclockwise to a vertical position from the position shown in Figure 2, abutment member I3 is raised against the pressure of spring I5 to move head portion I4 out of engagement with pin member II. A vertical slot 22 is provided in pin member II in which a securing bolt 23 is positioned, whereby pin member II is at times guided for vertical movement with respect to sleeve element 'I.

Abutment member I3 is provided with a plurality of vertically spaced openings 24 in which the bolt 25 which secures cam member I9 thereto may be selectively positioned for obtaining a desired spring pressure of spring I5.

A threaded cap member 26 is received in the lower internally threaded portion of sleeve element 2 to close off the bottom of said sleeve element.

In the position shown in Figures 1 and 2, the hinge is releasably locked so that the buttJ members I and 5 are resiliently held with respect to each other and may be rotated to a number of desired angular positions, teeth I!) and I2 interlocking at said positions. Wh'en lever arm '2| is rotated to a vertical position, the butt members I and 5 may freely rotate with respect to each other.

Instead of employing the interlocking rounded I teeth Ill and I2, the head of abutment member I3 and the opposing top surface of pin member I I may be formed with registrable semi-circular depressions in which ball bearing elements 25 are positioned, as shown in Figure 3. Said ball bearing elements function in the same manner as the interlocking teeth ID and I 2 to resiliently lock the butt members I and 5 in desired angular positions when the lever arm 2l is in its horizontally projecting position. Similar recesses and ball bearing elements are provided between the lower end of pin member II' and the upper end o-f-bottom element 8 in this Inodiiication of the invention. As in the modiiicaton of Figures 1 by a vertically movable abutment member I3 55 and 2, when lever arm 2l is raised to its vertical position, the spring pressure is removed from the pin elements and free rotation of the butt members is permitted.

The hinge structure is secured with respect to a door and the door frame sothat ready access may be had to lever arm 2| for manual actuation thereof. The door may thus be yieldably locked in a desired partly open position and may be readily released for free rotation on its hinges.

While certain specific embodiments of adjustable hinge structures have been disclosed in the foregoing description, it Will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention other than as defined by the scope of the appended claims.

What is claimed is:

1. An adjustable hinge structure compriing a pair of butt members, each butt member being formed with a plurality of axially aligned sleeve elements, said sleeve elements being arranged to interfit to define a pin-receiving recess, a first pin element secured Within a sleeve element of one butt member, a second pin element passing through other of the sleeve elements to hingedly connect the butt members, means securing said second pin element to a sleeve element of said other butt member for axial movement with re spect thereto, an abutment member bearing on said second pin element, spring means urging for at times` remo-ving the spring pressure from said second pin element.

2. The structure of claim 1, and wherein said manually operable means is an elliptical cam centrally secured to said abutment member and bearing on a bushing carried by the uppermost sleeve element.

3. The structure of claim 1, and wherein said camrmng means comprises rounded teeth formed on the opposing surfaces of the pin elements, said teeth being adapted to interlock.

4. The structure of claim 1, and wherein said camming -means comprises ball bearings positioned in registrable circularly arranged recesses formed in the opposing surfaces of the pin elements.

GEORGE' BUSHKO.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,440,713 Ausbourne Jan. 2, 1923 1,280,611 Wiltse et al.k Oct. 1, 1918 

